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41.
We analyse how the impact of determinants of inter-firm knowledge transfers in alliances can be moderated by the proximity of the resources pooled by partners. Six factors are examined: relative absorptive capacity (RAC), inter-partner trust, cultural distance between allies, knowledge ambiguity, knowledge protection, and the partners’ learning intent. We distinguish alliances mobilizing similar resources by partners (called ‘endogamies’ as allies build on their similarities) from alliances pooling different resources (called ‘exogamies’ as allies build on their differences). We propose that: (a) the impact of RAC on knowledge transfers is reinforced in exogamies, but reduced in endogamies; (b) the knowledge ambiguity and cultural distance effect is less in endogamies than in exogamies; (c) the trust and knowledge protection impact is stronger in exogamies than in endogamies; (d) the learning intent impact on knowledge transfers is similar in endogamies and exogamies. 相似文献
42.
Verena Aebischer Dominique Oberlé 《European Journal of Psychology of Education - EJPE》2004,19(3):275-294
The present study tests the assumption that the stable vs. unstable character of the structural relationship between groups
influences the type of bias to which differentiation may lead, and affects the likelihood of identification with one's ingroup.
Study 1 was conducted in Canada with university students and Study 2 in two French highschools; they both measured the impact
of membership in a prestigious vs. a non-prestigious group on intergroup perceptions. In the Canadian sample, the structural
relationship between groups was unstable, in a way that status asymmetry due to prestige differences might in time be eased
out to the advantage of the less prestigious group. In the French study, the structural relationship was stable and not likely
to evolve. As predicted, data from both samples' prestigious groups demonstrate a clear ingroup bias. Students from the less
prestigious Canadian university situated in an ascending movement did not judge their competencies as lower than those of
the prestigious university students, and further expressed the wish to enrol their children in their own university rather
than the prestigious university. As expected, data collected from French high school students in the less prestigious study
programme demonstrate a clear outgroup bias. Contrary to the initial hypothesis, in Canada, the prestigious university students
identify less strongly with their ingroup than the less prestigious university students. This effect may be interpreted as
participants distancing themselves from their ingroup prototype and it was also observed in the students of the prestigious
study programme in the French high schools. 相似文献
43.
In this article we focus on ‘cooperative engineering’, in which teachers and researchers co-design didactic sequences. In the first part of the article, we present cooperative engineering by describing some of the main principles on which it is grounded. The second part is dedicated to a case study, which enables us to illustrate some elements of the collective work in a specific cooperative design in kindergarten. The designed learning game, the ‘Treasure Game’, aimed to assist kindergarten students to build a system of graphical representations, which was implemented in a series of phases in which students were asked to memorise a series of items with increasing levels of difficulty. The game demonstrated the students’ growing competence in recalling items using strategies such as making lists and working collaboratively to collectively recall items through a ‘treasure box’. In the third part of the article, we show how this case study embodies some of the main principles put forward in the first part. 相似文献
44.
OBJECTIVE: The aim of this study is to identify the distinct developmental experiences associated with child sexual abuse and rape. METHOD: For 269 sexual offenders (137 rapists and 132 child sexual abusers), developmental experiences were recorded from a behavioral checklist, a parental-bonding survey, and a sexual history questionnaire. Offender classification was obtained from official records and verified through polygraph examinations. RESULTS: Compared to rapists, child sexual abusers reported more frequent experiences of child sexual abuse (73%), early exposure to pornography (65% before age 10), an earlier onset of masturbation (60% before age 11), and sexual activities with animals (38%). In contrast to child sexual abusers, rapists reported more frequent experiences of physical abuse (68%), parental violence (78%), emotional abuse (70%), and cruelty to animals (68%). Both child sexual abusers and rapists (>93%) reported frequent exposure to violent media during their childhood. Most offenders (94%) described having insecure parental attachment bonds; 76% of rapists reported avoidant parental attachments and 62% of child sexual abusers reported anxious parental attachments. CONCLUSIONS: Findings from this study support the role of specific developmental experiences as etiological factors in differential sexual offending. Child sexual abusers' developmental histories were characterized by heightened sexuality; whereas rapists' childhood histories were more indicative of violence. These findings have implications for the treatment of sexual abusers and the prevention of sexual abuse. PRACTICE IMPLICATIONS: This study's findings suggest that sexual offenders have been socialized to satisfy human needs of intimacy and sexuality through maladaptive means, which implies that a risk management approach may not be sufficient treatment. Although risk models teach offenders skills to avoid high-risk situations, they fail to address the maladaptive strategies that they may have developed for satisfying needs. Instead, the focus of treatment should be to equip offenders with the knowledge, skills, and opportunities to achieve these needs in an acceptable manner. Thus, this model will provide these individuals with the opportunity to live a healthy life without sexual offending. 相似文献
45.
Dominique Peeters Tine Degrande Mirjam Ebersbach Lieven Verschaffel Koen Luwel 《European Journal of Psychology of Education - EJPE》2016,31(2):117-134
This study tested whether second graders use benchmark-based strategies when solving a number line estimation (NLE) task. Participants were assigned to one of three conditions based on the availability of benchmarks provided on the number line. In the bounded condition, number lines were only bounded at both sides by 0 and 200, while the midpoint condition included an additional benchmark at the midpoint and children in the quartile condition were provided with a benchmark at every quartile. First, the inclusion of a midpoint resulted in more accurate estimates around the middle of the number line in the midpoint condition compared to the bounded and, surprisingly, also the quartile condition. Furthermore, the two additional benchmarks in the quartile condition did not yield better estimations around the first and third quartile, because children frequently relied on an erroneous representation of these benchmarks, leading to systematic estimation errors. Second, verbal strategy reports revealed that children in the midpoint condition relied more frequently on the benchmark at the midpoint of the number line compared to the bounded condition, confirming the accuracy data. Finally, the frequency of use of benchmark-based strategies correlated positively with mathematics achievement and tended to correlate positively also with estimation accuracy. In sum, this study is one of the first to provide systematic evidence for children’s use of benchmark-based estimation strategies in NLE with natural numbers and its relationship with children’s NLE performance. 相似文献
46.
Julia A. Leonard Dominique N. Martinez Samantha C. Dashineau Anne T. Park Allyson P. Mackey 《Child development》2021,92(4):1325-1336
Children need to learn to persist through challenges, yet adults sometimes step in to solve problems for them. Here, we looked at how adult taking over related to children’s persistence. In an observational study (N = 34, ages 4–8), we found that parents who took over more often during a challenging puzzle task rated their children as dispositionally less persistent. To establish whether taking over can cause reduced persistence, we ran two preregistered experiments (N = 150, ages 4–5). Children assigned to a taking over condition persisted less on a subsequent task compared to those in a teaching or a baseline condition. Reframing the context did not ameliorate the negative impact of taking over. The results suggest that taking over impairs children’s persistence. 相似文献
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Economic theory views patents as policy instruments aimed at fostering innovation and diffusion. Three major implications are drawn regarding current policy debates. First, patents may not be the most effective means of protection for inventors to recover R&D investments when imitation is costly and first mover advantages are important. Second, patentability requirements, such as novelty or non-obviousness, should be sufficiently stringent to avoid the grant of patents for inventions with low social value that increase the social cost of the patent system. Third, the trade-off between the patent policy instruments of length and breadth could be used to provide sufficient incentives to develop inventions with high social value. Beyond these three implications, economic theory also pleads for a mechanism design approach: an optimal patent system could be based on a menu of different degrees of patent protection where stronger protection would involve higher fees, allowing self-selection by inventors. 相似文献